CBSE Class 10 Science Paper 2018 Analysis

CBSE Class 10 Science Paper 2018 Analysis

CBSE class 10 science paper was conducted on 16th March, across various centres in our country. Our subject experts did an overview of the exam and also released solutions of the same on the day of the exam. In this article, we will do an in-depth analysis of the CBSE Class 10 Science paper.

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1. Syllabus

2. Paper Pattern

The only change in paper pattern was that practical based questions were of subjective type only this year.

3. Chapter-wise distribution

Chapter-Wise distribution of CBSE Class 10 Science Paper:

Chapter

Weightage in 2018

Chemical reactions & equations

2+2 PBQ

Acids bases and salts

3

Metals and non-metals

5+2PBQ

Carbon and its compounds

2+3

Periodic classification of elements

5

Life processes

5+2PBQ

Control and coordination

2+3

How do organisms reproduce?

3+5+2PBQ

Heredity and evolution

1

Light – reflection and refraction

2+3+2PBQ

Human eye and the colourful world

5

Electricity

3+3+2PBQ

Magnetic effects of electric current

5

Sources of energy

1

Our environment

3

Management of natural resources

3

4. Abnormalities / new observations in the paper

Some abnormalities from previous years’ papers were observed in this year’s paper, which are listed here for you:

1st ever PBQ from metals and non-metals – one PBQ question was based on reactivity series of metals. In earlier papers, no PBQ from this chapter was asked.

No PBQ from carbon and its compounds – every year from 2015 to 2017, atleast 3 PBQ questions have been coming from carbon, though this year no practical question was asked from this

Dobereiner’s triads and Newlands octaves – these concepts were asked for the first time since 2008 exam

From How do organisms reproduce?, PBQs on budding in yeast and reproduction of amoeba were asked in 2015, 16, 17 and appeared this year as well

The question regarding female reproductive system and placenta was repeated from last year’s paper – this tells us the importance of practising previous years’ papers

Only 1 mark question was asked from Heredity and evolution – in previous years’, the weightage of this chapter has been 4-5 marks, with mostly questions of 3 or 5 marks

5. Difficulty Level Analysis

We have compiled a question wise difficulty level data for each question, based on feedback we received from our students. Note that a question which is directly given in NCERT is termed as easy, a question involving calculations is termed medium while a question asked indirectly from NCERT is termed difficult.

Note: All data w.r.t. Outside Delhi paper, code 31-1

Question number

Level

1

Medium

2

Medium

3

Difficult

4

Easy

5

Easy

6

Medium

7

Medium

8

Medium

9

Easy

10

Easy

11

Medium

12

Medium

13

Easy

14

Easy

15

Easy

16

Easy

17

Easy

18

Easy

19

Easy

20

Easy

21

Easy

22

Difficult

23

Easy

24

Medium

25

Easy

26

Medium

27

Medium

Summary:

Easy questions

15

Medium questions

10

Difficult questions

2

This year, 5 numericals were asked, worth 15 mark, including questions in PBQ.

In 2017, 21 marks worth of numericals were asked.

This year, 2 HOTS questions were asked, worth 4 marks. Last year also 2 HOTS questions appeared in the exam, worth 4 marks.

6. Most Importantly

Entire question paper was from NCERT. So the importance of reading your NCERT is immense. Those of you who were thorough with NCERT, should definitely score good marks.

Now the next exam that Avanti will focus on is Math class 10th boards. We will be conducting a live doubt solving session on 23rd March. Make sure you register for the session and post your doubts using this link: https://goo.gl/forms/KmzE7LbsLUp5gfGv2